#!/usr/bin/env bash

# Copyright (c) 2021-2024 tteck
# Author: tteck (tteckster)
# License: MIT
# https://github.com/tteck/Proxmox/raw/main/LICENSE

function header_info {
    clear
    cat <<"EOF"
   ________
  / ____/ /___ _____  ________  _____
 / / __/ / __ `/ __ \/ ___/ _ \/ ___/
/ /_/ / / /_/ / / / / /__/  __(__  )
\____/_/\__,_/_/ /_/\___/\___/____/

EOF
}
IP=$(hostname -I | awk '{print $1}')
YW=$(echo "\033[33m")
BL=$(echo "\033[36m")
RD=$(echo "\033[01;31m")
BGN=$(echo "\033[4;92m")
GN=$(echo "\033[1;92m")
DGN=$(echo "\033[32m")
CL=$(echo "\033[m")
BFR="\\r\\033[K"
HOLD=" "
CM="${GN}✓${CL}"
APP="Glances"
hostname="$(hostname)"

header_info
while true; do
    read -p "This will Install ${APP} on $hostname. Proceed(y/n)?" yn
    case $yn in
    [Yy]*) break ;;
    [Nn]*) exit ;;
    *) echo "Please answer yes or no." ;;
    esac
done

spinner() {
    local chars="/-\|"
    local spin_i=0
    printf "\e[?25l"
    while true; do
        printf "\r \e[36m%s\e[0m" "${chars:spin_i++%${#chars}:1}"
        sleep 0.1
    done
}

msg_info() {
  local msg="$1"
  echo -ne " ${HOLD} ${YW}${msg}   "
  spinner &
  SPINNER_PID=$!
}

msg_ok() {
  if [ -n "$SPINNER_PID" ] && ps -p $SPINNER_PID > /dev/null; then kill $SPINNER_PID > /dev/null; fi
  printf "\e[?25h"
  local msg="$1"
  echo -e "${BFR} ${CM} ${GN}${msg}${CL}"
}

msg_info "Installing $APP"
bash -c "$(wget -qLO - https://raw.githubusercontent.com/nicolargo/glancesautoinstall/master/install.sh)" &>/dev/null
cat <<EOF >/etc/systemd/system/glances.service
[Unit]
Description=Glances - An eye on your system
After=network.target

[Service]
Type=simple
ExecStart=/usr/local/bin/glances -w
Restart=on-failure

[Install]
WantedBy=multi-user.target
EOF
systemctl enable -q --now glances.service
msg_ok "Installed $APP on $hostname"

echo -e "${APP} should be reachable by going to the following URL.
         ${BL}http://$IP:61208${CL} \n"